Q. The Langmuir adsorption isotherm is deduced using the assumption :
A) The adsorption sites are equivalent in their ability to adsorb the particles
B) The heat of adsorption varies with coverage
C) The adsorbed molecules interact with each other
D) The adsorption takes place in multilayers
Explanation
(a)
Langmuir adsorption isotherm is valid for monolayer (chemical adsorption). Having adsorption sites at active centres, $i.e.,$free valencies which have equivalent ability to adsorb the particles.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.